Prime Power Test Technician Level 2 Practice Exam 2 Of 3 (Technical)

50 Questions | Total Attempts: 957

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Prime Power Test Technician Level 2 Practice Exam 2 Of 3 (Technical)

Test Technician Level 2 practice exam. 50 questions selected at random. 90 minute time limit. Please allow yourself at least 1 hour to complete the test properly. 70% is passing. You cannot save test and resume later. Good Luck!


Questions and Answers
  • 1. 
    The sum of the interior angles of a triangle is :
    • A. 

      360

    • B. 

      120

    • C. 

      180

    • D. 

      90

  • 2. 
    If  X=5 , Y=6, then : XY(X^2 -Y) =                      X times Y times   (X squared minus Y)
    • A. 

      370

    • B. 

      570

    • C. 

      840

    • D. 

      930

  • 3. 
    If a specified value is 120.00 , and the measured value is 124.56, the % error is:
    • A. 

      6.39%

    • B. 

      4.56%

    • C. 

      45.6%

    • D. 

      3.8%

  • 4. 
    One giga unit is equal to:
    • A. 

      1,000

    • B. 

      .001

    • C. 

      100,000

    • D. 

      1,000,000

    • E. 

      1,000,000,000

  • 5. 
    Which formula is correct if : A=100, B= 200, and C= 300
    • A. 

      C=A-B

    • B. 

      C=C+A

    • C. 

      A=B+C

    • D. 

      B=C-A

  • 6. 
    Kilo equals :
    • A. 

      Mega / 1000

    • B. 

      Giga / 100

    • C. 

      Deca x 10

    • D. 

      Mili x 1000

  • 7. 
    If 4000 was the specified value, and 3850 was the mesured value, what is the percent error?
    • A. 

      -.096

    • B. 

      -3.75

    • C. 

      3.90

    • D. 

      1.04

  • 8. 
    Insulation resistance tests sets usually include ___ test connection terminals.
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

  • 9. 
    With insulation resistance test equipment :
    • A. 

      Leakage current returned by the guard lead are not normally metered

    • B. 

      Leakage current returned by the guard lead passes through the meter

    • C. 

      The guard lead provides stabilizing voltage

    • D. 

      The guard lead must be connected to ground

  • 10. 
    Properly adjusting to the null point of a transformer turns ratio test set :
    • A. 

      Measures the difference between the test set's internal fixed ratio reference transformer and the specimen transformer

    • B. 

      Assures correct test current flow and test voltage

    • C. 

      Is accomplished by changing the adjustable ratio of the test set's reference transformer

    • D. 

      Is accomplished by changing the test set's adjustment dial unil the test set impedence matches the specimen transformer's impedance

    • E. 

      None of the above

  • 11. 
    Typical ground resistance test sets provide :
    • A. 

      3 output current terminals

    • B. 

      3 output voltage terminals

    • C. 

      4 output voltage terminals

    • D. 

      4 output terminals

    • E. 

      None of the above

  • 12. 
    An insulation resistance test set has 3 scales on its meter face. The top scale is 3 to 3k gigohms. The center scale is 30 to 30k megohms. The bottom scale is 3 to 30k kilohms. After selecting the center scale and connecting the leads to a 2300 volt , 500 HP motor, the instrument indicates the lowest reading. You have determined that :
    • A. 

      There are shorted turns in the windings

    • B. 

      The motor insulation is weak

    • C. 

      The value measured should be reported

    • D. 

      The test set is on the wrong scale

    • E. 

      B and D are correct

  • 13. 
    What is indicated when the turns ratio test set is hard to crank and the correct exciting voltage cannot be reached ?
    • A. 

      Incorrect polarity

    • B. 

      Shorted specimen windings

    • C. 

      Open windings

    • D. 

      KVa rating is too large

    • E. 

      A or B

  • 14. 
    Low resistance ohmmeters typically include ____ test connection terminals
    • A. 

      2

    • B. 

      3

    • C. 

      4

    • D. 

      5

    • E. 

      6

  • 15. 
    Winding resistance measurements are performed by using a :
    • A. 

      Megohmeter

    • B. 

      Multimeter

    • C. 

      Low resistance ohmmeter

    • D. 

      Insulation resistance test set

  • 16. 
    Measuring instruments with graduated scales and pointers are referred to as __________ type instruments
    • A. 

      Analog

    • B. 

      Digital

    • C. 

      LED

    • D. 

      Averaging

    • E. 

      Recording

  • 17. 
    Generally, high current test sets:
    • A. 

      Provide controllable high currents at 277/480 volts

    • B. 

      Are 3 phase devices

    • C. 

      Are operated ungrounded

    • D. 

      Provide high test voltages

    • E. 

      Provide high test currents at 10 volts or less

  • 18. 
    Which instrument or test set is LEAST likely to be used during the testing of medium voltage cables
    • A. 

      Megohmmeter

    • B. 

      Ohmmeter

    • C. 

      DC high potential test set

    • D. 

      Voltage detector

    • E. 

      Turns ratio test set

  • 19. 
    A polorization index  test typically requires the use of :
    • A. 

      Voltmeter

    • B. 

      Megohhmeter

    • C. 

      Low resistance ohmmeter

    • D. 

      Power factor test set

    • E. 

      Watt or phase angle meter

  • 20. 
    Insulation power factor test equipment
    • A. 

      Is 3 phase

    • B. 

      Can perform load power factor measurement

    • C. 

      Is frequently used to test transformers

    • D. 

      Measures transformer or feeder power usage

    • E. 

      Verifies power ratings

  • 21. 
    What test equipment is used to test the RTD inputs of a motor protective relay?
    • A. 

      Decade box

    • B. 

      High current test set

    • C. 

      Relay test set

    • D. 

      Multi-meter

    • E. 

      Megohmmeter

  • 22. 
    Multi-meters can be routinely used to
    • A. 

      Measure resistance between switchgear and building neutrals and ground conductors during maintenance testing of ground faults

    • B. 

      To prove the integrity of bolted bus and cable connections

    • C. 

      To measure phase angle

    • D. 

      All of the above

    • E. 

      None of the above

  • 23. 
    How would you use a VOM rated at 10 amperes maximum to measure a 100 amp load?
    • A. 

      Use the 10A scale

    • B. 

      Use the ohm scale

    • C. 

      Use the volt scale

    • D. 

      Use the mA scale

    • E. 

      Use a current transformer

  • 24. 
    To measure circuit resistance, first
    • A. 

      Zero the ohm scale

    • B. 

      Check for the presence of voltage

    • C. 

      Start with the highest ohm scale

    • D. 

      Check frequency

  • 25. 
    The maximum voltage rating of a multi-meter used without a high voltage probe is typically
    • A. 

      2500 volts RMS, continuous

    • B. 

      2500 volts RMS or dc, continuous

    • C. 

      750-1000 volts RMS, non-continuous

    • D. 

      600 volts peak

    • E. 

      500 volts ac or dc, continuous